Next thing I would do is try to shoot marbles out of it. If it does that than proceed to step 3.

Which is urinating in the "top" part of the reg, hooking it up, and shooting your gun till it stops "misting".

The ammonia and urea do a good job of getting all of the lube out of the solenoid and small hoses of the line (it breaks it down), it's really important to relube your gun after, as it will also take the lube off the bolt.